If you convert the original WMV files to FLV you should be able to get them to work. I used both Format Factory (a free video convertor) and Adobe Media Encoder to change some WMVs into FLVs. I then imported them into PowerPoint 2010 (32bit version) with the Presenter Plugin. I the published the PowerPoint (again using Presenter plugin) to our Adobe Connect Server and the videos played back fine.

(I did get an error message when importing the FLVs into the PowerPoint, but they still imported and played back fine.)